Use AJAX to submit form / Google Captcha

I’ve seen a number of posts discussing various problems with captcha. I’m sort of wondering why you don’t offer Google Captcha as an option or perhaps a simple math captcha?

It’s become somewhat routine these days to use AJAX to submit forms. It has many advantages including

1) Validating data as it is entered
2) Upon form submit it keeps you in place rather than placing you at the top of the page. The way it currently works the visitor is easily confused and must scroll down the page to see the message telling them of success (thank you) or failure (you messed up with captcha, email, or something else) – and so need to to fix and re-submit.

I started using Contact Form 7 shortly after transitioning to WordPress. It doesn’t solve world hunger but it offers more captcha methods and uses ajax.